/*
* Polygon.java
* Copyright (C) 2003
*
* $Id: Polygon.java,v 1.2 2005/01/10 00:14:33 cawe Exp $
*/
/*
Copyright (C) 1997-2001 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
using System;
using glpoly_t = Suake2.UI.render.glpoly_t;
using Lib = Suake2.UI.util.Lib;
//UPGRADE_TODO: The type 'java.nio.FloatBuffer' could not be found. If it was not included in the conversion, there may be compiler issues. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1262'"
using FloatBuffer = java.nio.FloatBuffer;
namespace Suake2.UI.render.fastjogl
{
	
	/// <summary> Polygon
	/// 
	/// </summary>
	/// <author>  cwei
	/// </author>
	public sealed class Polygon:glpoly_t
	{
		internal static FloatBuffer InterleavedBuffer
		{
			get
			{
				return (FloatBuffer) buffer.rewind();
			}
			
		}
		
		private const int MAX_POLYS = 20000;
		private const int MAX_BUFFER_VERTICES = 120000;
		
		// backup for s1 scrolling
		private static float[] s1_old = new float[MAX_VERTICES];
		
		//UPGRADE_NOTE: The initialization of  'buffer' was moved to static method 'jake2.render.fastjogl.Polygon'. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1005'"
		private static FloatBuffer buffer;
		private static int bufferIndex = 0;
		private static int polyCount = 0;
		private static Polygon[] polyCache = new Polygon[MAX_POLYS];
		
		internal static glpoly_t create(int numverts)
		{
			Polygon poly = polyCache[polyCount++];
			poly.clear();
			poly.numverts = numverts;
			poly.pos = bufferIndex;
			bufferIndex += numverts;
			return poly;
		}
		
		internal static void  reset()
		{
			polyCount = 0;
			bufferIndex = 0;
		}
		
		private Polygon()
		{
		}
		
		private void  clear()
		{
			next = null;
			chain = null;
			numverts = 0;
			flags = 0;
		}
		
		// the interleaved buffer has the format:
		// textureCoord0 (index 0, 1)
		// vertex (index 2, 3, 4)
		// textureCoord1 (index 5, 6)
		
		public override float x(int index)
		{
			return buffer.get_Renamed((index + pos) * 7 + 2);
		}
		
		public override void  x(int index, float value_Renamed)
		{
			buffer.put((index + pos) * 7 + 2, value_Renamed);
		}
		
		public override float y(int index)
		{
			return buffer.get_Renamed((index + pos) * 7 + 3);
		}
		
		public override void  y(int index, float value_Renamed)
		{
			buffer.put((index + pos) * 7 + 3, value_Renamed);
		}
		
		public override float z(int index)
		{
			return buffer.get_Renamed((index + pos) * 7 + 4);
		}
		
		public override void  z(int index, float value_Renamed)
		{
			buffer.put((index + pos) * 7 + 4, value_Renamed);
		}
		
		public override float s1(int index)
		{
			return buffer.get_Renamed((index + pos) * 7 + 0);
		}
		
		public override void  s1(int index, float value_Renamed)
		{
			buffer.put((index + pos) * 7 + 0, value_Renamed);
		}
		
		public override float t1(int index)
		{
			return buffer.get_Renamed((index + pos) * 7 + 1);
		}
		
		public override void  t1(int index, float value_Renamed)
		{
			buffer.put((index + pos) * 7 + 1, value_Renamed);
		}
		
		public override float s2(int index)
		{
			return buffer.get_Renamed((index + pos) * 7 + 5);
		}
		
		public override void  s2(int index, float value_Renamed)
		{
			buffer.put((index + pos) * 7 + 5, value_Renamed);
		}
		
		public override float t2(int index)
		{
			return buffer.get_Renamed((index + pos) * 7 + 6);
		}
		
		public override void  t2(int index, float value_Renamed)
		{
			buffer.put((index + pos) * 7 + 6, value_Renamed);
		}
		
		public override void  beginScrolling(float scroll)
		{
			int index = pos * 7;
			for (int i = 0; i < numverts; i++, index += 7)
			{
				scroll += (s1_old[i] = buffer.get_Renamed(index));
				buffer.put(index, scroll);
			}
		}
		
		public override void  endScrolling()
		{
			int index = pos * 7;
			for (int i = 0; i < numverts; i++, index += 7)
			{
				buffer.put(index, s1_old[i]);
			}
		}
		static Polygon()
		{
			buffer = Lib.newFloatBuffer(MAX_BUFFER_VERTICES * STRIDE);
			{
				for (int i = 0; i < polyCache.Length; i++)
				{
					polyCache[i] = new Polygon();
				}
			}
		}
	}
}